wow I'd never heard that duet before. I adore Placido Domingo's rich, velvety voice, and have to admit, I didn't realize John Denver could up his game to sing more classically, as well. Not that he was anywhere close to Domingo's talent, but he definitely had more depth to his voice than one might guess from his pop hits.
Anyway, thanks for sharing. I'm off to iTunes to add that one to my playlists!
EDIT: I am apparently way out of touch with music news... wasn't aware of his fall from grace until just now. Yikes. What a sad ending for someone with so much talent.